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Allegro: Discovering DNA motifs from sequence and expression datasets

  Screenshot of Allegro
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Allegro is a software tool for simultaneous discovery of cis-regulatory motifs and their associated expression profiles. Its input are DNA sequences (typically, promoters or 3' UTRs) and genome-wide expression profiles. Its output is the set of motifs found, and for each motif the set of genes it regulates (its transcriptional module). Allegro is highly efficient and can analyze expression profiles of thousands of genes, measured across dozens of experimental conditions, along with all regulatory sequences in the genome. Allegro has a user-friendly graphical user interface.

As of 2009, the Allegro software integrates also the Amadeus motif finding algorithm.


News

Nov. 2014: Updated files with known regulatory motifs from public databases:
  • JASPAR 5.0_ALPHA for transcription factor binding sites.
  • miRBase 21.0 (updated) for micro-RNA motifs.
    Please download the files from the download page.

    Nov. 2013: Amadeus is now integrated in the Expander software suite for gene expression analysis. In addition to the stand-alone software available till now, it can also be executed as part of the Expander analysis flow.

    Jun. 2013: The promoters and 3' UTRs available in Allegro have been revised. They are available together with the software from the download page.

    Jul. 2011: AmadeusPBM is now avilable. This new addition to the software is a tool for extracting binding site motifs from protein binding microarray (PBM) data. You can download the new AmadeusPBM from the download page.

    Apr. 2011: Updated micro-RNA seed motifs from miRBase 12.0 to miRBase 16.0.
    Please download the new files from the download page.

    Sep. 2010: The DREAM5 Challenge - Amadeus ranked first in the DREAM5 Challenge for identifying the binding site motifs of 66 PBM (Protein Binding Microarray) datasets (see below).


    Motif discovery tasks

    The Allegro software package also includes our recently published Amadeus motif discovery platform. Thus, the integrated software supports the following motif finding tasks:
    1. Expression data analysis
      Input: Regulatory sequences , expression dataset(s)
      Output: Sequence motifs and their associated expression profiles

    2. Target set analysis
      Input: Regulatory sequences , set(s) of co-regulated genes
      Output: Motifs that are over-represented in one or more of the given sets

    3. Sequence-only analysis
      Input: Regulatory sequences
      Output: Motifs with global spatial features, i.e., motifs that appear non-uniformly along the promoters, between the two strands, or among the chromosomes

    4. PBM analysis
      Input: PBM files
      Output: Binding site motifs of the TF that was used in the protein binding microarray experiment

    PBM analysis: Amadeus can also be used to identify binding site motifs from Protein Binding Microarray (PBM) data. A PBM dataset of a specific TF includes its measured binding intensities for each probe sequence covering together all possible 10-mers. In a blind competition (DREAM5 Challenge, Sep. '10) Amadeus ranked first (tied with one other group) in identifying the binding site motifs of 66 TF datasets. Running time is a few seconds per dataset.

    Publications

    Allegro and Amadeus are described in our papers: